I new version of firmware (1.1.80, 1.1.84) iac.integral is frozen if map is higher than in config. But when you shift gears, always you have small decrease in iac.integral as you can see in log:
http://www.vems.hu/files/DamirMuha/1.1.84/v3.3_n001057-2010.11.15-21.00.02.vemslog
At idle i have iac.integral -32(1s). When i start driving iac.integral is -34, but when i change gear from first to second (5s in log), iac.integral is decreased to -44. After 4 gear changes iac.integral is -70 and i have problem with car stalling.
IMHO better solution is like older firmware has(less than 1.1.74). If map is higher than in config iac.intergral is 0.